Improved apparatus for the distkumon of tar and other substances



' To allrhmnit may concem.y A

#Be-it .known that T, LEVIS. FALES, of Bos# lation `ot Tar and otherSubstances;

`condenser with .the vapor Iligh ter. oil'.

UNITED .STATESy PATENT OFFICE.'

LEVI FAL'ES,v BOSTON, MASSACHUSETTS.

lMPROVED APPARATUS FOR THE DlSTlLLA'TlON (-)F TAR AND .OTHER` SUBSTANCES.

.Specificationforming part of Letters-PatentNo. 52,155, dated January 2.5,-186b.

ton, in the-,county of'Sxltfolk and State of Massachusetts, ha ve inventeda new and nsel4 fnl Ilnprovernent'in Apparatus for the Distiland l1.410 herebyileclare that the following is a full,

clear, and exact description of the same, referaccompanying draw-` ence being had tothe ing, forming' part of this specification, said drawing ,representing a vertical section ota still with vmyimprovement applied. y

This invention has, generally speaking, for. its-,object `the extraction ot'joilo' aluniform .specific .gravity ofi-,about 450,# suitable for illuminating purposes, from tar, patatine, and

distillation Ofj.

petroleum o r the redistillation' of coal-oils;1Th'e'boilingbrfevapora-ting temf 1n azvap'oriform' state .thatfi `'their distille-5 tion, therejwill .bjeevolved fromthem a large quantity 'o heavy vapors which must be prevented. froinf passing 'over into theordinary' My: .invention coohngniedium at the outlet of the retort for the pnrpose-of.'cooling thevapors'at that. `"point to a sufficient. degree 'densation and to cause? the conseparation of the heavier por-v tionsandtheir return. to'the still, while the yaporsof :thelighter illuminating-oil are left free to pass on alone' to the ordinaryeondenser. inwhichihey'are inally condensed.

'Iam awaref that .a cooling appara-ttrs'has been-heretoforejapplied at orlnear that point;l but 'sov ar.` as-.Lam aware Ino means of regu- Eating :the -aetionofsnch apparatus has been employed; iNofw, as .in the progress of .the distilling 'process the increasing density'of the oil or other-substance remaining in the retort requires an increasing heat to .produce its evaporation and by .consequence the vapors rising from 'the retort 'hayean increasing temperature, I find itlnecessary, in order .to obtain that uniormdensityof theproduct which .passes over to the condenser, where final condensation is e'ected, that there should also be an increased application' of the cooling` 'methe heavy lresiil'tial oils-which' :result from the" tort or body of the in effect aportion Afor a free return relates tothe application -of 'a ordinary condenser.

-openorclosed at the top, 4open. The said jacket has -a pipe, b, furnished Witl1 a;stopcock,jb, for

d inln sliiicientv to'inaintaina uniform temper'- ,atnre ofthefjeoolingapparatus wherein the separation oliI the heavier and lighter vapors are effected.

ratusjap'pli'ed. at the outlet of the retort, -be

tween it and the ordinary condenser, of means ofso regulating the supplyor action 'of wa;-

vterr orvother cooling medium by which the separafion of theheavier from the lighter vapors is ei'ectedas to obtainl the uniform density ot' the product of tin-al condensation.' It further mentioned separation of the heavier and l gh ter products by the iniiuence of cold'water or air is obtained; around or wit-hin a dome or ele'- vated chamber situated directly over land in Such'unobstrnctedco'mmunieation with the restill that it may constitute of the same, and :provide -otfthe condensed heavier prodncts'to the lower part ot' the still.

ATo enable others skilled in the art to apply my invention to use, 1will proceed to describe it with reference to the'drawing's. -v r -Ais the retort or body of the still,'of any usual orsuitable forni, heated by attire belowV 0r by other suitable means. j B is a dom'eor elevated chamber on the top of the retort or body A, and having the'botto'm. entirely open thereto.' To this dome or chamberis attached' the goose-neck or outletlpipe'C, leading to the (Not shown.) This dome isi-surrounded by aI jacket,'D', which may be but is represented connected with it the admission of Coldwater from any suitable elevated reservoir. (Not shown.) Within the dome there is arranged a close vessel, F, which has connected with it a pipe, c, furnished with y a stopcock, .c,'for the admission of cold water. The jacket D is furnished at dierentheights. 'withfaucets d d d2, for the escape of the water admitted by the pipe b. The vessel F is furnished at dilierent heights with faucets e e 62,'

for 'the' escapeof the water admitted by the pipe c. l

Theoperation is as follows The Still having been charged with the tar or other subconsists in the arrangement, of` ..1 A tliecooling-surfaces, through .which the abovestance to be distilled, is then heated till ebullition commences', the faucets d d d2 and e e e2 being all open.' Cold water' is then admitted to the jacket D and vessel F by opening the cocks b and c', for' the purpose of cooling the dome or elevated chamber B, and thereby producing the condensation ot' .the 'heavier vapors andcausing theircondensed products to fallback into the retort, the water tlow'ing through the said jacket and vessel and escaping by the lower faucets, Zand c. The vapors which pass fromthe dome bythe outlet-pipe C, 'without being condensed are condensed by v their passage through the' ordinary condenser and collected in a suitable receiver, in which their condensed products are ltested'by the" hydrometer, and if found to be ot' a'i specific gravi ity above. 450 Baume one or .more of the faucets d d" Pand e e e2 are closed,commencA ying with the lowest, d ande, to allow' the waterto rise to a greater height in the jacket Dand vessel F, and increase the condensation in the. dome or elevated chamber B, till the escaping condensed products have the desired lspecific gravity, ',As the'distilla-tion. proceeds and the tar or' other substance in the-still becomes morel dense, which, will be detected by the diminution of 'quantity of the escaping'. con,- densed products or their diminished specific gravity, the heat'applied to the retort 'is increased, andas this increased'heat will cause the elim-ination ot' heavier vapors, the effective cooling-surfacesot the jacket 'D and vessel F vWill have to be increased from time to. time by closing the faucets next above those previf ously closed, as it is necessary to maintain a nearly-uniformtemperature in the dome or elevated chamber Bin order to, obtain a nearlyunit'orm density of the escaping condensed.

This may be aon@ by raising the head in the reservoir from which the said jacket and vessel are supplied. The How of water may,

. however, be produced by means' of a forcepump, instead of by the pressure of the column in 'the elevated reservoir, and in that ease the j jacket D should be closed at the top, and the increased tiow of water maybe obtained by increasing the speed-of the pump;-

If cold air be used as the coolingmedium, the jacket D should'be closed at the top, and

the airforced through the saidjacket and vessel-,F by a fan or other blowing apparatus.

andthe increased cooling et'ect obtained by.

increasing the speed ot' the rsaid apparatus.

ltmay be mentioned that it may not be de- Vsirable 'in all cases. to use both the jacket D and the internal cooling-vessel, F, as a sufticient cooling ei'ectinight be obtained bv the use ot' either of those contriva'nces."

:What I claim as my invention, and desire to secure'by Letters Patent, is

l. Inconnection with a coolingfchamber at or nearthe outlet of a retort, ybetween it and theordinary condenser, for the separation of the heavier from the lighter vapors eliminated in the distillation ot' tar and heavy-oils and substances, the employment ot' means of regulating 'the supply or action ot' the cooling medium, substantiallyas herein described,

.wherebya uniform density ot' light oil is ob-v f ".tained. i

i 2.' Increasing the cooling effect as the heat of the still is increased, either by increasing the eective cooling-surface or increasing the ow of the cooling medium, substantially as herein described.

3. The arrangement ot' the cooling-surfaces around or within a dome or elevated chamber situated directly over the retort and in such unobstructed communication therewith asto form in effect a portion thereof, substantially as and for the purpose herein specied.

' -LEVI S. FALES.

Witnesses: i

J. 'W. CooMBs, A..LE CLERC'. 

